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(ITERP1/28) The Divertor Remote Maintenance Project

D. Maisonnier¹, E. Martin², K. Akou³, A. Antipenkov², R. Bätz⁴, J. Blevins⁵, T. Burgess⁶, G. Castelli⁷, G. Cerdan¹, S. Chiocchio², C. Damiani⁸, J. P. Friconneau⁹, P. Gaggini¹⁰, R. Gottfried⁴, R. Haange⁶, S. Kakudate³, M. Lamminpää¹¹, S. Leclerc¹², K. Oka³, A. Poggianti⁸, G. Poltronieri⁷, J. Sheppard¹³, M. Siuko¹¹, A. Tada³, N. Takeda³, Y. Takiguchi³, A. Tesini⁶, R. Tivey², A. Turner¹⁴

¹ NET, Boltzmannstr. 2, 85748 Garching, Germany
² ITER Joint Work Site, Boltzmannstr. 2, 85748 Garching, Germany
³ JAERI, 2-4 Shirane, Shirakata, Tokai-mura, Naka-Gun, Ibaraki 319-11 Japan
⁴ SIEMENS AG, KWU NR-R, Freyeslebenstraße 1, 91058 Erlangen, Germany
⁵ CFFTP, 800 Kipling Avenue, Etobicoke, Ontario, M8Z 5S4, Canada
⁶ ITER Joint Work Site, Naka, Naka-machi, Ibaraki-ken, 311-01 Japan
⁷ BELLELI, Via G. Talierco 3, 46100 Mantova, Italy
⁸ ENEA, CR Brasimone, CP 1, 40032 Camugnano (Bo), Italy
⁹ CEA, DPSA/STR, BP6, 92265 Fontenay aux Roses Cedex, France
¹⁰ ENEA, via Martiri di Montesole 4, 40129 Bologna, Italy
¹¹ IHA, Korkeakoulunkatu 2, Box 589, FIN-33101 Tampere, Finland
¹² COMEX, 36 Bd des Oceans, 13275 Marseille Cedex 9, France
¹³ SPAR AEROSPACE Ltd, 9445 Airport Rd, Brampton, Ontario, L6S 4J3, Canada
¹⁴ NNC Ltd, Booths Hall, Chelford Rd, Knutsford, Cheshire, WA16 8QZ, England

Abstract.  Remote replacement of the ITER divertor will be required several times during the life of ITER. To facilitate its regular exchange, the divertor is assembled in the ITER vacuum vessel from 60 cassettes. Radial movers transport each cassette along radial rails through the handling ports and into the vessel where a toroidal mover lifts and transports the cassette around a pair of toroidal rails. Once at its final position the cassette is locked to the toroidal rails and is accurately aligned in both poloidal and toroidal directions. A further requirement on the divertor is to minimise the amount of activated waste to be sent to a repository. To this end the cassettes have been designed to allow the remote replacement, in a hot cell, of their plasma facing components. The paper describes the two facilities built at ENEA Brasimone, Italy, whose aim is to demonstrate the reliable remote maintenance of the divertor cassettes.

Read the full paper in PDF format.